quick question

[SilverDrvn]

I have read in a couple posts that the deeper coins will read in the negatives -3,-2,-1 has anyone experienced this, because I have passed up hundered's of those signals? Ive dug old wheats in the 30-33 range but never lower! thanks Cody!

 

[JHM]

Yes, but you can usually make it jump to a high number by sweeping from different angles.

 

[Golden]

I'm not familar with your coins and how they read, but when I'm hunting for old British coins, I've had a few read in at negative number readings. I've found that either the coin is very worn or pitted, or the ground conditions are moist or damp. But this isn't true in every case. There just seems to be a pattern on finding these coins, and the negative readings. I think that some coins minted over certain periods of time, with a type of combination of metals, could be a contributing factor. In the end, I think that as you detect more often, you begin to formulate your own opinion in why some coins will read differently some of the time, in comparision to other times, with the same coinage. As I've mentioned before on this forum, when I hunted and found a hoard of chinese coins that dated from 1621 to late 1600's, in the same vicinity or area, some coins were pulling out at +19 to +24, or -5 to -2. I noted here that below a building site where the ground was black and moist, the coins came out with negative numeric readings, but above the building site, where the ground was dry and compact, the coins came out at positive numeric readings. And these coins where in better nick too, as the dry conditions didn't adversely effect them, as did the coins coming out from the dampness below the site, where the coins tended to be more worn, and harder to clean. But as I said, you will come to your own conclusion, dependant on the type of conditions you detect in, that's relevant to the coins you find there. Hope I've helped somewhat.
Golden

 

[SilverDrvn]

Well that gives me a little motive to go back to a few of these sites, I have seen signals jump from the negatives right up to 36 37 38 but a lot of times that I see this I end up diggin up a rusty ol nail! it's to bad these minelabs dont speak english! Thank you

 

[JHM]

Sometimes rusty iron will do the same thing if it's wet. Once I dug a rusty bolt that read a solid 37 in the ground. After I dug it up, it still read that then it dried out and read a -10.

 

[beachguy777]

JHM. That's sugniffican what you just said there. It sounds like your saying that the main difference between the extreme positive readins and the low negative readings is just the water. That's amazing in my book, because I always thought the readings were determined on the content of the metal, ferrous or conductive, but apparently not so! That's a very informative post. Maybe we need to dig everything and "be damed" with discrimination.

 

[beachguy777]

Golden that's a very impressive post too. I'm stunned that the readings would be different seemlingly only due to the different soil conditions. That's pretty scary, as far as: "should we use any discrimination or not"?????? That's really food for thought. I always thought it only depended on the type of metal in the object, but apparently not. Very important subject, in my opinion. Marc Trainor.

 

[JHM]

I don't understand it myself. It seems that when a signal is really weak it tends to migrate toward the negative numbers. It's hard for me to pass up a -1 that jumps to a 37. It's usually rusty iron or silver.